SimpleModelProblemCollector problems = new SimpleModelProblemCollector(result);

        modelValidator.validateEffectiveModel(model, request, problems);

        return result;
    }

    private static class SimpleModelProblemCollector implements ModelProblemCollector {

        ModelValidationResult result;

     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */
    void validateEffectiveModel(Model model, ModelBuilderRequest request, ModelProblemCollector problems);

     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */
    void validateEffectiveModel(Model model, ModelBuildingRequest request, ModelProblemCollector problems);

            throws Exception {
        Model model = read(pom);

        SimpleProblemCollector problems = new SimpleProblemCollector(model);

        validator.validateEffectiveModel(model, requestConfigurer.apply(new DefaultModelBuildingRequest()), problems);

        return problems;
    }

    private SimpleProblemCollector validateRaw(String pom, int level) throws Exception {

        }

        result.setEffectiveModel(resultModel);

        // effective model validation
        modelValidator.validateEffectiveModel(resultModel, request, problems);

        if (hasModelErrors(problems)) {
            throw problems.newModelBuilderException();
        }

        return result;
    }

            // plugins configuration
            pluginConfigurationExpander.expandPluginConfiguration(resultModel, request, problems);
        }

        // effective model validation
        modelValidator.validateEffectiveModel(resultModel, request, problems);

        if (hasModelErrors(problems)) {
            throw problems.newModelBuildingException();
        }

        return result;
    }

                            exec);
                }
            }
        }
    }

    @Override
    public void validateEffectiveModel(Model m, ModelBuilderRequest request, ModelProblemCollector problems) {
        validateStringNotEmpty("modelVersion", problems, Severity.ERROR, Version.BASE, m.getModelVersion(), m);

                            exec);
                }
            }
        }
    }

    @Override
    public void validateEffectiveModel(Model ma, ModelBuildingRequest request, ModelProblemCollector problems) {
        org.apache.maven.api.model.Model m = ma.getDelegate();